The diagram shows the structure of four amino acids in solution.
Which of these four amino acids have an overall charge?

1 )
alanine and aspartate
2 )
alanine and glycine
aspartate and lysine
4 )
glycine and lysine
تحلیل ویدئویی تست
تحلیل ویدئویی برای این تست ثبت نشده است!